1.8 V 1800 mV
3.3 V 3299 mV
3.3 V bias 3300 mV
Bus Revision 130
Related
Documentation
PTX5000 Centralized Clock Generator Description on page 16•
• PTX5000 Centralized Clock Generator LEDs on page 17
• Maintaining the PTX5000 Centralized Clock Generators on page 108
Troubleshooting the PTX5000 Cooling System
•
Troubleshooting the PTX5000 Fan Trays on page 122
•
Troubleshooting Temperature Alarms on page 125
Troubleshooting the PTX5000 Fan Trays
Problem The following alarms, LEDs, and other indications indicate a problem with the fan trays:
• An alarm indicates that a fan failed or a fan tray is missing.
• A LED for a fan tray on the craft interface is lit red.
In Table 33 on page 122, the text in the column labeled ”LCD Message” appears in the
display of the craft interface. The text in the column labeled “CLI Message” appears in
the output from the show chassis alarms command.
Table 33: Fan Tray Alarms
SolutionAlarm ConditionCLI MessageLCD Message
Alarm
Type
Replace the fan tray.A fan has failed.fan-name FailureFan FailureRed
Reinstall the fan tray in the chassis.A fan tray is missing
or too many fan trays
have failed.
Too many fans
missing or failing
Fans Missing
Reinstall the fan tray in the chassis.A fan tray has been
removed.
fan-name RemovedFan RemovedYellow
Solution To troubleshoot the fan trays:
1. Find the source of the problem by looking at the display on the craft interface. The
number of alarm conditions, as well as the source of each alarm, appears on the
screen.
2. Issue the show chassis alarms command to get information about the source of an
alarm condition:
user@host> show chassis alarms
Copyright © 2012, Juniper Networks, Inc.122
PTX5000 Packet Transport Switch Hardware Guide
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